Police in northeastern Nigeria say they have arrested members of a radical Muslim sect who ambushed security officers at a checkpoint.

Borno state police chief Mohammed Abubakar said Thursday that police arrested four men while four others had fled, after a 30-minute shootout on Wednesday night.

He said the gunmen ambushed police officers and soldiers at a checkpoint in Maiduguri. The only injury was a suspect who was shot in the leg.

Police believe the suspects are members of Boko Haram. The group is accused of killing more than 30 people in recent months including security officers, political and spiritual leaders.

Boko Haram means "Western education is sacrilege" in the Hausa language.